Sedimentological and facies characterization in the modelling of the Turonian sandstone reservoir package, Jubilee field, Ghana

Assessment of conditions that favoured hydrocarbon accumulations necessitates sedimentological characterization and facies identification as it elucidates the detailed records of the depositional environment and its evolution. Integration of various data sources becomes imperative for the establishment of the facies architecture which enables the evaluation of reservoir quality for Jubilee field in the deep Tano Basin. Early stage realization of decrease in production prediction of the field was attributed to early water breakthrough, baffle bridges and reservoir heterogeneity. This development requires its sedimentological evaluation through textural characterization, lithofacies identification and reservoir quality indication. The identified seventeen lithofacies allowed the deduction of deep-marine turbidite depositional environment. Our findings highlight the significance of sedimentological and facies development processes in the overall evolution of deep-water channel systems. The history of the Jubilee channel complex sets almost definitely characterizes many other emerging undersea channel systems and can be used to evaluate the distribution, shape, and structuring of the resulting reservoir sands. In turn, the Jubilee data set adds to the library of channel-levee-splay-lobe systems, aids as a prospective predictive model for hydrocarbon exploration and development, and as an outcrop explanatory analogue of a channel-splay system.